Travis - Enable cache for D2XX folder

[skip appveyor]
To avoid download and copy on each build

.travis.yml

@@ -8,6 +8,7 @@ language: cpp
 cache:
   directories:
   - qwt
+  - D2XX
 
 env:
   global:

travis/linux/before_install.sh

@@ -33,10 +33,11 @@ sudo apt-get update -qq
 sudo apt-get install r-base-dev
 R --version
 
-# D2XX
-wget http://www.ftdichip.com/Drivers/D2XX/Linux/libftd2xx-x86_64-1.3.6.tgz
-mkdir D2XX
-tar xf libftd2xx-x86_64-1.3.6.tgz -C D2XX
+# D2XX - refresh cache if folder is empty
+if [ -z "$(ls -A D2XX)" ]; then
+    wget http://www.ftdichip.com/Drivers/D2XX/Linux/libftd2xx-x86_64-1.3.6.tgz
+    tar xf libftd2xx-x86_64-1.3.6.tgz -C D2XX
+fi
 
 # SRMIO
 wget http://www.zuto.de/project/files/srmio/srmio-0.1.1~git1.tar.gz

travis/osx/before_install.sh

@@ -17,8 +17,16 @@ brew install r
 ## Disable KML for now
 ## brew install --HEAD travis/libkml.rb
 sudo chmod -R +w /usr/local
-curl -O https://www.ftdichip.com/Drivers/D2XX/MacOSX/D2XX1.2.2.dmg
-hdiutil mount D2XX1.2.2.dmg
+
+# D2XX - refresh cache if folder is empty
+if [ -z "$(ls -A D2XX)" ]; then
+    curl -O https://www.ftdichip.com/Drivers/D2XX/MacOSX/D2XX1.2.2.dmg
+    hdiutil mount D2XX1.2.2.dmg
+    cp /Volumes/release/D2XX/Object/10.5-10.7/x86_64/libftd2xx.1.2.2.dylib D2XX
+    cp /Volumes/release/D2XX/bin/*.h D2XX
+fi
+sudo cp D2XX/libftd2xx.1.2.2.dylib /usr/local/lib
+
 
 # AWS client to upload binaries to S3 bucket
 brew install awscli

travis/osx/before_script.sh

@@ -1,13 +1,6 @@
 #!/bin/bash
 set -ev
 
-# D2XX
-mkdir D2XX
-cp /Volumes/release/D2XX/Object/10.5-10.7/x86_64/libftd2xx.1.2.2.dylib D2XX
-sudo cp /Volumes/release/D2XX/Object/10.5-10.7/x86_64/libftd2xx.1.2.2.dylib /usr/local/lib
-cp /Volumes/release/D2XX/bin/*.h D2XX
-sed -i "" "s|libftd2xx.dylib|@executable_path/../Frameworks/libftd2xx.1.2.2.dylib|" src/FileIO/D2XX.cpp
-
 # Python SIP
 python3 --version
 python3-config --prefix
@@ -30,6 +23,8 @@ sed -i "" "s|#\(QMAKE_CXXFLAGS\).*|\1_RELEASE += -mmacosx-version-min=10.7 -arch
 sed -i "" "s|^#CloudDB|CloudDB|" src/gcconfig.pri
 sed -i "" "s|^#LIBZ|LIBZ|" src/gcconfig.pri
 sed -i "" "s|#\(SRMIO_INSTALL =.*\)|\1 /usr/local|" src/gcconfig.pri
+# D2XX
+sed -i "" "s|libftd2xx.dylib|@executable_path/../Frameworks/libftd2xx.1.2.2.dylib|" src/FileIO/D2XX.cpp
 sed -i "" "s|#\(D2XX_INCLUDE =.*\)|\1 ../D2XX|" src/gcconfig.pri
 sed -i "" "s|#\(D2XX_LIBS    =.*\)|\1 -L../D2XX -lftd2xx.1.2.2|" src/gcconfig.pri
 ## Disable KML for now